Every country, and the places worth the trip 26,398 places across 240 countries Guess the country
Meridiela.

Achill Island

The largest island off Ireland, reached by bridge, with a cliff-backed beach at Keem and a village of roofless stone houses.

Updated 19 October 2026

Achill Island

AI illustration

Typeisland
WhereCounty Mayo
Nearest cityWestport
Best seasonJune to September
Time to allowA day or more
Getting thereBy bridge at Achill Sound, about an hour west of Westport
EntryFree
Real photos (1)
Achill Island
Photo: Kiran Madhusudhanan, CC BY-SA 4.0, via source, resized to 1200 px

Achill is the largest island off the Irish coast and you reach it by bridge, so it feels less like an island than a continuation of Mayo that has run out of shelter. The west end holds Keem Bay, a horseshoe of sand under steep green slopes at the end of a narrow cliff road, and behind it the Croaghaun cliffs drop to the sea from the ridge, reachable only on foot. Slievemore rises over the north coast with the Deserted Village on its lower slope, close to a hundred roofless stone houses left in the nineteenth century. Basking sharks pass Keem in early summer and were once caught here commercially.

History

Archaeological evidence shows Achill was occupied from at least the Neolithic, when the climate was warmer and drier than today, dense woodland covered much of the island and the blanket bogs had not yet formed (Wikipedia, Achill Island).

Highlights

  • Keem Bay - the sand beach in a cliff horseshoe at the end of the west road.
  • The Croaghaun cliffs - a high sea cliff wall on the western ridge, walk-in only.
  • The Deserted Village - roofless stone houses along the slope of Slievemore.
  • The Atlantic Drive - the southern coast loop above Achill Sound.

When to go

June to September for swimming at Keem and the best chance of the west end being clear of cloud. Basking sharks are most likely in late spring and early summer. The island empties from October and much of what serves visitors shuts, which some people prefer. Weather changes within an hour here in any month of the year.

Things to know

The road down to Keem is narrow, steep and edged by a drop, and the small car park fills by late morning in July and August. The beach is fine and very cold. The Croaghaun cliffs need a long pathless walk over bog with no barrier at the top. Away from Keem the island is bleak in poor weather and services are thin.

Nearby

Westport is an hour east; Clew Bay and Croagh Patrick sit on the way.

Key facts

Area148 km² (57 sq mi)
Location53.9589° N, 10.0389° W · map

Source: Wikidata, item Q631581, read on 18 October 2026.

What to pack for Achill Island

Chosen from what this place is for. Tap a kit for the full checklist.

  • Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
  • Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
  • Water shoes - Protect your feet on rocky entries, hot sand and sea-urchin spines. Find on Amazon
  • Dry bag - Keeps phone, cash and keys safe while you are in the water. Find on Amazon

Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.

All packing kits

Plan your trip

Where to start if Achill Island is going on the list.

Booking links on this page are affiliate links - if you book through them we may earn a small commission at no extra cost to you. It never changes what we write about a place.

Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

← More nature & outdoors in Ireland

One place a week.

A short Friday email about one place worth knowing.